Pump flow issue
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The unit is equipped with a magnetic pump, and the nameplate indicates a flow rate of 45 m3/hour. What is the maximum flow rate in cubic meters per hour? Thank you, points appreciated
The figures listed on the nameplate refer to the values of the pump at its highest efficiency, that is, the design values. It is not the highest value; the flow and head performance curve of a centrifugal pump is generally a monotonically decreasing function. Therefore, it can be estimated that at a certain head level, the actual flow rate will be greater than 45 m3/h. To estimate the actual flow rate, you can refer to the Q-H performance curve of the centrifugal pump. I hope this can help you.
A tip from the design institute: The flow rate indicated on the nameplate, 1, is the flow rate at the point of optimal efficiency as specified by some pump manufacturers. 2. Some pump manufacturers indicate the usage point specified in the agreement reached during negotiations. In any case, only by looking at the curve of the random data can the point of maximum flow be identified.
Can the actual flow rate reach 60 m3/hour?
Look at the pump’s curve, as well as the pump’s net positive suction head
The key is to look at the curve graph; for a magnetic pump with a capacity of 45 cubic feet per minute, the inlet pressure should be around 80. The normal standard capacity is 50 cubic feet per minute. If you need 60 cubic feet per minute, simply increase the size of the outlet valve – I’m sure that will achieve the desired flow rate. However, you need to pay attention to the electric current; if the motor is not powerful enough, too high a flow rate can lead to overloading and cavitation, so it’s not recommended to use it in this way